diff options
| author | Kent Overstreet <kent.overstreet@gmail.com> | 2017-12-21 18:00:30 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2017-12-21 18:06:45 -0500 |
| commit | 1cf4d51dc4661f336f5318c176a3561ddf5bf04f (patch) | |
| tree | 8b390ccd48361ba1408be6799d46e62c6382cc39 /include/linux/time64.h | |
| parent | 8acc54456e11ee0ec80ed0c6abb6d68abae60592 (diff) | |
Update bcachefs sources to 14ce2a2031 bcachefs: fixes for building in userspace
Diffstat (limited to 'include/linux/time64.h')
| -rw-r--r-- | include/linux/time64.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/time64.h b/include/linux/time64.h index 2d9f8291..870bdef4 100644 --- a/include/linux/time64.h +++ b/include/linux/time64.h @@ -204,4 +204,19 @@ static __always_inline void timespec64_add_ns(struct timespec64 *a, u64 ns) extern struct timespec64 timespec64_add_safe(const struct timespec64 lhs, const struct timespec64 rhs); +static inline struct timespec timespec_trunc(struct timespec t, unsigned gran) +{ + /* Avoid division in the common cases 1 ns and 1 s. */ + if (gran == 1) { + /* nothing */ + } else if (gran == NSEC_PER_SEC) { + t.tv_nsec = 0; + } else if (gran > 1 && gran < NSEC_PER_SEC) { + t.tv_nsec -= t.tv_nsec % gran; + } else { + WARN(1, "illegal file time granularity: %u", gran); + } + return t; +} + #endif /* _LINUX_TIME64_H */ |